毕业设计--江淮宾悦汽车变速器设计

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1、I 摘 要 变速器用来改变发动机传到驱动轮上的转矩和转速，目的是在原地起步、爬坡、 转弯、加速等各种行驶工况下，使汽车获得不同的牵引力和速度，同时使发动机在最 有利的工况范围内工作。是汽车总成部件中的重要组成部分，是主要的传动系统总成 之一。变速器的结构对汽车的动力性、经济性、操纵的可靠性与轻便性、传动的平稳 性与效率等都有直接影响。 本设计研究了二轴五挡手动变速器，其目的是熟练运用和掌握机械原理、机械设 计、AutoCAD 等知识，并利用 AutoCAD 软件绘制装配图和零件图等几项内容。对变速 器的工作原理做了阐述，变速器的各挡齿轮和轴做了详细的设计计算，并进行了强度 校核，对一些标准件进

2、行了选型。变速器的传动方案设计并讲述了变速器中各部件 材料的选择。 本文将概述变速器的现状和发展趋势， 介绍变速器领域的最新发展状况。 对工作原理做了阐述，对不同的变速器传动方案进行比较，选择合理的结构方案进行 设计。对变速器的各挡齿轮和轴以及轴承做了详细的设计计算，并进行了强度和刚度 校核计算,并为这些元件选择合适的工程材料及热处理方法。 对一些标准件进行了选型 以及变速器的传动方案的比较与选择。最后，本文将对变速器换档过程中的重要部件 同步器以及操纵机构进行阐述，讲述同步器的类型、工作原理、设计方法以及重要 参数。 关键词：变速器；齿轮；同步器；设计；参数 II ABSTRACT Tran

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